http://news.yahoo.com/s/ap_travel/20...lpBHNlYwMyNjgz
Looks like kite tubes are now banned by the U.S. Corps of Engineers on its lakes in Arkansas and Missouri.
"Victims have reported coughing up blood, torn muscles, whiplash-type injuries, broken ribs, punctured lungs and cervical fractures," according to a safety alert from the park service.